Speaker Placement; Speaker Connection - JBL L8400P/230 Owner's Manual

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For more than 50 years, JBL
has been involved in every
aspect of music and film
recording and reproduction,
from live performances to the
recordings you play in your
home, car or office.
We're confident that the JBL
system you have chosen will

SPEAKER PLACEMENT

• As a general rule, bass
response increases as a
subwoofer is placed closer
to a wall. Therefore, bass
output is maximized when
the subwoofer is placed in a
corner.
• It is also recommended that
the subwoofer be positioned
along the same wall as the
front loudspeakers.

SPEAKER CONNECTION

When we designed the L8400P/
230 powered subwoofer, our
goal was to offer the user the
best possible performance
combined with the most flexi-
ble and complete installation
options. Please look over the
following three examples to
determine which description
best matches your system and
follow the corresponding
hookup instructions.
To use the binding-post
speaker terminals with bare
wire, unscrew the collar until
the hole through the center
post is visible under the collar.
Insert the bare end of the wire
through the hole in the post,
provide every note of enjoy-
ment that you expected – and
that when you think about
purchasing additional audio
equipment for your home, car
or office, you will once again
choose JBL.
Please take a moment to regis-
ter your product on our Web
Low-frequency sounds are nor-
mally omnidirectional, meaning
the listener can't tell where they
are generated from. However,
frequencies between 75Hz and
150Hz can be localized, espe-
cially at higher volume levels.
Positioning your subwoofer as
recommended will provide the
most natural soundstage and
imaging from your loudspeaker
system.
Remember that these are just
guidelines. Since every listening
room is different, JBL strongly
then screw the collar back
down until the connection is
tight. The holes in the center
of the collars are intended for
banana-type connectors. To
comply with European CE
certification, these holes are
blocked with plastic inserts at
the point of manufacture. To
use banana-type connectors
requires the removal of the
inserts. Do not remove these
inserts if you are using the
product in an area covered by
the European CE certification.
Speakers and electronics
have corresponding positive
(+) and negative (–) terminals.
It is important to connect both
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enables us to keep you posted
on our latest advancements,
and helps us to better under-
stand our customers and build
products that meet their needs
and expectations.
JBL Consumer Products
recommends experimenting
with the positioning of your
subwoofer to obtain the most
pleasing results in your room.
One technique that can help
you find the ideal subwoofer
location is to temporarily place
the subwoofer near the main
listening location. Then move
around the room and determine
where you hear the most
pleasing bass performance.
This would then be the ideal
location for the subwoofer.
speakers identically: positive
(+) on the speaker to positive
(+) on the amplifier and nega-
tive (–) on the speaker to
negative (–) on the amplifier.
Wiring "out of phase" results
in thin sound, weak bass and
a poor stereo image.
With the advent of multichan-
nel surround sound systems,
connecting all of the speakers
in your system with the cor-
rect polarity remains equally
important in order to preserve
the proper ambience and
directionality of the program
material.
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